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<head><meta charset="utf-8"><title>weekly meeting October 2 · t-compiler/wg-nll · Zulip Chat Archive</title></head>
<h2>Stream: <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/index.html">t-compiler/wg-nll</a></h2>
<h3>Topic: <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html">weekly meeting October 2</a></h3>

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<a name="135057883"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135057883" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135057883">(Oct 02 2018 at 19:24)</a>:</h4>
<p>Just a quick heads up, <span class="user-group-mention" data-user-group-id="491">@WG-compiler-nll</span> weekly meting will being in about six minutes</p>



<a name="135058078"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135058078" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> lqd <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135058078">(Oct 02 2018 at 19:27)</a>:</h4>
<p>hello everyone</p>



<a name="135058361"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135058361" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135058361">(Oct 02 2018 at 19:31)</a>:</h4>
<p>Oh, right, I suppose greeting people is nice. <span class="emoji emoji-263a" title="smile">:smile:</span></p>



<a name="135058366"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135058366" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135058366">(Oct 02 2018 at 19:31)</a>:</h4>
<p>hi everyone!</p>



<a name="135058395"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135058395" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135058395">(Oct 02 2018 at 19:31)</a>:</h4>
<p>As usual we have our <a href="https://paper.dropbox.com/doc/Non-lexical-lifetimes-NLL-Triage--AONTNtFZxhanVeHM_N06EeGiAg-Em2cJrvxQMMFWLE7lE5Be" target="_blank" title="https://paper.dropbox.com/doc/Non-lexical-lifetimes-NLL-Triage--AONTNtFZxhanVeHM_N06EeGiAg-Em2cJrvxQMMFWLE7lE5Be">NLL Triage Paper</a></p>



<a name="135058466"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135058466" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135058466">(Oct 02 2018 at 19:32)</a>:</h4>
<p>lets start with the <a href="https://github.com/rust-lang/rust/issues?q=is%3Aopen+is%3Aissue+label%3AA-NLL+-label%3ANLL-deferred+-label%3ANLL-fixed-by-NLL+milestone%3A%22Edition+2018+RC+2%22+no%3Aassignee" target="_blank" title="https://github.com/rust-lang/rust/issues?q=is%3Aopen+is%3Aissue+label%3AA-NLL+-label%3ANLL-deferred+-label%3ANLL-fixed-by-NLL+milestone%3A%22Edition+2018+RC+2%22+no%3Aassignee">unassigned issues for rc2</a></p>



<a name="135058506"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135058506" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135058506">(Oct 02 2018 at 19:33)</a>:</h4>
<p>I'm going to tag <a href="https://github.com/rust-lang/rust/issues/47184" target="_blank" title="https://github.com/rust-lang/rust/issues/47184">#47184</a> as a metabug and tracking issue. Or at least, I think that's what its current status is ... ?</p>



<a name="135058513"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135058513" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135058513">(Oct 02 2018 at 19:33)</a>:</h4>
<p>aka "NLL should identify and respect the lifetime annotations that the user wrote" <a href="https://github.com/rust-lang/rust/issues/47184" target="_blank" title="https://github.com/rust-lang/rust/issues/47184">#47184</a></p>



<a name="135058583"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135058583" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135058583">(Oct 02 2018 at 19:34)</a>:</h4>
<p>no not a tracking issue; that's just for unstable features. Sorry.</p>



<a name="135058587"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135058587" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> memoryruins <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135058587">(Oct 02 2018 at 19:34)</a>:</h4>
<p>makes sense ^^</p>



<a name="135058589"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135058589" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> memoryruins <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135058589">(Oct 02 2018 at 19:34)</a>:</h4>
<p>nvm ^^</p>



<a name="135058610"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135058610" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135058610">(Oct 02 2018 at 19:34)</a>:</h4>
<p>basically, I just want some sort of tag that helps me remember that its ... okay ... that this is unassigned?</p>



<a name="135058624"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135058624" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135058624">(Oct 02 2018 at 19:35)</a>:</h4>
<p>or maybe ... I'll just assign it to myself, as a reminder to actually go through and follow up on the subissues</p>



<a name="135058640"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135058640" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135058640">(Oct 02 2018 at 19:35)</a>:</h4>
<p>next: "[nll] better error message when returning refs to upvars" <a href="https://github.com/rust-lang/rust/issues/53040" target="_blank" title="https://github.com/rust-lang/rust/issues/53040">#53040</a></p>



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<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135058655" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135058655">(Oct 02 2018 at 19:35)</a>:</h4>
<p>mm</p>



<a name="135058704"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135058704" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135058704">(Oct 02 2018 at 19:36)</a>:</h4>
<p>does anyone want to take point on this?</p>



<a name="135058713"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135058713" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135058713">(Oct 02 2018 at 19:36)</a>:</h4>
<p>I was going to try and write down some notes on that one next</p>



<a name="135058717"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135058717" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> davidtwco <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135058717">(Oct 02 2018 at 19:36)</a>:</h4>
<p>I can take a look.</p>



<a name="135058722"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135058722" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135058722">(Oct 02 2018 at 19:36)</a>:</h4>
<p>okay lets tentatively assign to <span class="user-mention" data-user-id="116107">@davidtwco</span> , great</p>



<a name="135058733"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135058733" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135058733">(Oct 02 2018 at 19:37)</a>:</h4>
<p>next: "Lifetime inference failed on HRTB input" <a href="https://github.com/rust-lang/rust/issues/54124" target="_blank" title="https://github.com/rust-lang/rust/issues/54124">#54124</a></p>



<a name="135058746"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135058746" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135058746">(Oct 02 2018 at 19:37)</a>:</h4>
<p>I think I'll take this one</p>



<a name="135058749"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135058749" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135058749">(Oct 02 2018 at 19:37)</a>:</h4>
<p>unless someone else <em>wants</em> it</p>



<a name="135058754"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135058754" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135058754">(Oct 02 2018 at 19:37)</a>:</h4>
<p>(in which case: go ahead and steal it back from me)</p>



<a name="135058796"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135058796" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135058796">(Oct 02 2018 at 19:38)</a>:</h4>
<p>next: "NLL: unused_mut lint triggered by <code>for _ in &lt;unreachable&gt;</code>" <a href="https://github.com/rust-lang/rust/issues/54586" target="_blank" title="https://github.com/rust-lang/rust/issues/54586">#54586</a></p>



<a name="135058798"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135058798" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135058798">(Oct 02 2018 at 19:38)</a>:</h4>
<p>the question on that one .. well, I'll leave a comment</p>



<a name="135058818"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135058818" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135058818">(Oct 02 2018 at 19:38)</a>:</h4>
<p><span class="user-mention" data-user-id="128294">@blitzerr</span> has been working on <a href="https://github.com/rust-lang/rust/issues/54586" target="_blank" title="https://github.com/rust-lang/rust/issues/54586">#54586</a>, right?</p>



<a name="135058823"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135058823" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135058823">(Oct 02 2018 at 19:38)</a>:</h4>
<p>and there was also some input from <span class="user-mention" data-user-id="121053">@varkor</span></p>



<a name="135058824"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135058824" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> lqd <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135058824">(Oct 02 2018 at 19:38)</a>:</h4>
<p>and/or varkor</p>



<a name="135058841"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135058841" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135058841">(Oct 02 2018 at 19:39)</a>:</h4>
<p>maybe I'll assign to <span class="user-mention" data-user-id="128294">@blitzerr</span>  for now</p>



<a name="135058905"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135058905" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135058905">(Oct 02 2018 at 19:40)</a>:</h4>
<p>that is: <span class="user-mention" data-user-id="128294">@blitzerr</span> , if you're not comfortable being assigned to it, just let me know and/or remove yourself from the ticket</p>



<a name="135058918"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135058918" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135058918">(Oct 02 2018 at 19:40)</a>:</h4>
<p>seems like we could assign to <span class="user-mention" data-user-id="121053">@varkor</span></p>



<a name="135058920"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135058920" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135058920">(Oct 02 2018 at 19:40)</a>:</h4>
<p>next: "NLL doesn't respect user types in closure signatures" <a href="https://github.com/rust-lang/rust/issues/54692" target="_blank" title="https://github.com/rust-lang/rust/issues/54692">#54692</a></p>



<a name="135058921"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135058921" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135058921">(Oct 02 2018 at 19:40)</a>:</h4>
<p>I think they were prepared with a fix</p>



<a name="135058930"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135058930" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135058930">(Oct 02 2018 at 19:40)</a>:</h4>
<p><span class="user-mention" data-user-id="116009">@nikomatsakis</span> I was trying to understand the conversation that went by about that</p>



<a name="135058935"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135058935" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135058935">(Oct 02 2018 at 19:40)</a>:</h4>
<p>I left some initial notes on <a href="https://github.com/rust-lang/rust/issues/54692" target="_blank" title="https://github.com/rust-lang/rust/issues/54692">#54692</a></p>



<a name="135058936"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135058936" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135058936">(Oct 02 2018 at 19:40)</a>:</h4>
<p>that <span class="user-mention" data-user-id="121053">@varkor</span> had prepped something in passing?</p>



<a name="135058937"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135058937" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135058937">(Oct 02 2018 at 19:40)</a>:</h4>
<p>yes</p>



<a name="135058941"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135058941" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> blitzerr <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135058941">(Oct 02 2018 at 19:41)</a>:</h4>
<p>I am fine with it but varkor already has a fix he is tinkering with</p>



<a name="135058958"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135058958" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135058958">(Oct 02 2018 at 19:41)</a>:</h4>
<p>though they did not confirm their desire to open a separate PR :)</p>



<a name="135058967"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135058967" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135058967">(Oct 02 2018 at 19:41)</a>:</h4>
<p>but it seems independent from the original PR</p>



<a name="135058971"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135058971" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135058971">(Oct 02 2018 at 19:41)</a>:</h4>
<p>I could also assign them both, though sometimes that leads to confusion about whom takes point</p>



<a name="135059074"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135059074" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135059074">(Oct 02 2018 at 19:42)</a>:</h4>
<p>not that big a deal I imagine</p>



<a name="135059133"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135059133" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135059133">(Oct 02 2018 at 19:43)</a>:</h4>
<p>last one: "NLL doesn't respect user types in closure signatures" <a href="https://github.com/rust-lang/rust/issues/54692" target="_blank" title="https://github.com/rust-lang/rust/issues/54692">#54692</a></p>



<a name="135059196"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135059196" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135059196">(Oct 02 2018 at 19:44)</a>:</h4>
<p>I also left some notes on that one</p>



<a name="135059210"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135059210" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135059210">(Oct 02 2018 at 19:45)</a>:</h4>
<p>any volunteers?</p>



<a name="135059235"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135059235" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135059235">(Oct 02 2018 at 19:45)</a>:</h4>
<p>I think I will take <a href="https://github.com/rust-lang/rust/issues/54574" target="_blank" title="https://github.com/rust-lang/rust/issues/54574">https://github.com/rust-lang/rust/issues/54574</a> away from <span class="user-mention" data-user-id="116925">@mikhail-m1</span> =)</p>



<a name="135059236"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135059236" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135059236">(Oct 02 2018 at 19:45)</a>:</h4>
<p>based on prior conversation</p>



<a name="135059240"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135059240" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135059240">(Oct 02 2018 at 19:45)</a>:</h4>
<p><span class="user-mention" data-user-id="116009">@nikomatsakis</span> sounds good</p>



<a name="135059242"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135059242" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135059242">(Oct 02 2018 at 19:45)</a>:</h4>
<p>and because it's a !@#!$! annoying one</p>



<a name="135059252"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135059252" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> blitzerr <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135059252">(Oct 02 2018 at 19:45)</a>:</h4>
<p>I can take that as well</p>



<a name="135059303"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135059303" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135059303">(Oct 02 2018 at 19:46)</a>:</h4>
<p><span class="user-mention" data-user-id="128294">@blitzerr</span> <a href="https://github.com/rust-lang/rust/issues/54692" target="_blank" title="https://github.com/rust-lang/rust/issues/54692">#54692</a>? Great</p>



<a name="135059307"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135059307" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> blitzerr <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135059307">(Oct 02 2018 at 19:46)</a>:</h4>
<p>Ya</p>



<a name="135059317"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135059317" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> blitzerr <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135059317">(Oct 02 2018 at 19:46)</a>:</h4>
<p>I would appreciate some mentoring notes though <span class="emoji emoji-1f600" title="grinning">:grinning:</span></p>



<a name="135059318"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135059318" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135059318">(Oct 02 2018 at 19:46)</a>:</h4>
<p>okay, all issues for RC2 are assigned now</p>



<a name="135059353"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135059353" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135059353">(Oct 02 2018 at 19:47)</a>:</h4>
<blockquote>
<p>I would appreciate some mentoring notes though <span class="emoji emoji-1f600" title="grinning">:grinning:</span></p>
</blockquote>
<p>I did leave <a href="https://github.com/rust-lang/rust/issues/54692#issuecomment-426390676" target="_blank" title="https://github.com/rust-lang/rust/issues/54692#issuecomment-426390676">some notes</a> but they are not as detailed; it's gonna be a mildly tricky bug as it will require coordinates changes  to various parts of the compiler</p>



<a name="135059358"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135059358" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135059358">(Oct 02 2018 at 19:47)</a>:</h4>
<p>there's only one nominated issue, and its really targetted at the Lang Design Team: "borrow-checker allows partial reinit of struct that has been moved away, but no use of it." <a href="https://github.com/rust-lang/rust/issues/21232" target="_blank" title="https://github.com/rust-lang/rust/issues/21232">#21232</a></p>



<a name="135059361"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135059361" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135059361">(Oct 02 2018 at 19:47)</a>:</h4>
<p>not super hard though, just touches a lot of things</p>



<a name="135059659"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135059659" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135059659">(Oct 02 2018 at 19:51)</a>:</h4>
<p>okay</p>



<a name="135059712"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135059712" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135059712">(Oct 02 2018 at 19:52)</a>:</h4>
<p>so, is there any other big business for this meeting...</p>



<a name="135059737"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135059737" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135059737">(Oct 02 2018 at 19:52)</a>:</h4>
<p>I will just make a quick note that earlier today <span class="user-mention" data-user-id="116009">@nikomatsakis</span> and I decided to mark <a href="https://github.com/rust-lang/rust/issues/54208" target="_blank" title="https://github.com/rust-lang/rust/issues/54208">#54208</a> as NLL-deferred</p>



<a name="135059741"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135059741" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Keith Yeung <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135059741">(Oct 02 2018 at 19:52)</a>:</h4>
<p>all those new issues linked with <a href="https://github.com/rust-lang/rust/issues/47184" target="_blank" title="https://github.com/rust-lang/rust/issues/47184">#47184</a> are accounted for, yeah?</p>



<a name="135059763"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135059763" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135059763">(Oct 02 2018 at 19:53)</a>:</h4>
<blockquote>
<p>all those new issues linked with <a href="https://github.com/rust-lang/rust/issues/47184" target="_blank" title="https://github.com/rust-lang/rust/issues/47184">#47184</a> are accounted for, yeah?</p>
</blockquote>
<p>I hope so. might be worth quickly double checking</p>



<a name="135059829"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135059829" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135059829">(Oct 02 2018 at 19:54)</a>:</h4>
<p>I don't see an actual issue for "Associated constants in patterns" ...</p>



<a name="135059840"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135059840" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135059840">(Oct 02 2018 at 19:54)</a>:</h4>
<p>I don' think we filed issues for <em>everything</em></p>



<a name="135059842"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135059842" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135059842">(Oct 02 2018 at 19:54)</a>:</h4>
<p>just associated constants in expressions (<a href="https://github.com/rust-lang/rust/issues/54571" target="_blank" title="https://github.com/rust-lang/rust/issues/54571">#54571</a>)</p>



<a name="135059846"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135059846" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135059846">(Oct 02 2018 at 19:54)</a>:</h4>
<p>there's issues for <em>almost</em> everything, it seems...</p>



<a name="135059950"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135059950" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135059950">(Oct 02 2018 at 19:56)</a>:</h4>
<p><span class="user-mention" data-user-id="116009">@nikomatsakis</span> was there anything else you wanted to cover? More performance stuff? Polonius? Rah go team?</p>



<a name="135059990"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135059990" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135059990">(Oct 02 2018 at 19:57)</a>:</h4>
<p>Rah rah! not really</p>



<a name="135060000"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135060000" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135060000">(Oct 02 2018 at 19:57)</a>:</h4>
<p>I'm just getting nervous about meeting the Oct 25 deadline :)</p>



<a name="135060002"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135060002" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135060002">(Oct 02 2018 at 19:57)</a>:</h4>
<p>but I think we're doing good</p>



<a name="135060050"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135060050" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135060050">(Oct 02 2018 at 19:58)</a>:</h4>
<p>we've got a lot of open issues though</p>



<a name="135060053"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135060053" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135060053">(Oct 02 2018 at 19:58)</a>:</h4>
<p>three weeks, I think we'll be okay</p>



<a name="135060062"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135060062" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135060062">(Oct 02 2018 at 19:58)</a>:</h4>
<p>but yes, lots to do</p>



<a name="135060065"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135060065" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135060065">(Oct 02 2018 at 19:58)</a>:</h4>
<p>many of which are .. in progress .. so that's a good thing</p>



<a name="135060090"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135060090" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135060090">(Oct 02 2018 at 19:59)</a>:</h4>
<p>Okay well in that spriit</p>



<a name="135060093"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135060093" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135060093">(Oct 02 2018 at 19:59)</a>:</h4>
<p>I'm going to get back to hacking!</p>



<a name="135060096"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135060096" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135060096">(Oct 02 2018 at 19:59)</a>:</h4>
<p>Bye all, thanks for attending!</p>



<a name="135060172"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135060172" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135060172">(Oct 02 2018 at 20:00)</a>:</h4>
<p>Ciao!</p>



<a name="135060180"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135060180" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> lqd <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135060180">(Oct 02 2018 at 20:00)</a>:</h4>
<p>(I've opened the cfg compression PR for polonius so we can discuss it someday (as it's almost certainly wrong anyway); in the meantime I will have a little time in the coming week if there's an issue I can help with)</p>



<a name="135060505"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135060505" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> memoryruins <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135060505">(Oct 02 2018 at 20:06)</a>:</h4>
<p>ooooh those are really solid improvements (modulo possible caveats)</p>



<a name="135060638"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135060638" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> lqd <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135060638">(Oct 02 2018 at 20:08)</a>:</h4>
<p>let's make sure it does what it should before talking about those heh (as I said it's probably wrong :) (it would also be interesting to try with leapfrog)</p>



<a name="135088301"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135088301" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> lqd <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135088301">(Oct 03 2018 at 08:16)</a>:</h4>
<p>(for those interested, leapfrog is around -30%)</p>



<a name="135113867"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135113867" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jake Goulding <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135113867">(Oct 03 2018 at 16:06)</a>:</h4>
<p>FWIW, I find performance percentages completely useless. Does positive % mean faster, or does negative? Can something be 100% <strong>faster</strong> (the answer should be yes, but not how many people use the term)</p>



<a name="135113901"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135113901" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jake Goulding <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135113901">(Oct 03 2018 at 16:07)</a>:</h4>
<p>I find it much more clear to say "before X it takes Y timeunits, afterwards it takes Z timeunits"</p>



<a name="135114201"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135114201" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jake Goulding <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135114201">(Oct 03 2018 at 16:13)</a>:</h4>
<p>And the word fast<strong>er</strong> makes it worse</p>



<a name="135114289"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135114289" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jake Goulding <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135114289">(Oct 03 2018 at 16:14)</a>:</h4>
<p>For example, a test takes 100s before a commit and 80s after. The previous <em>speed</em> was 0.01 tps and the new speed is 0.0125 tps. The ratio of new speed/old speed is 125%. But then people will say that it's 125% faster, or will they say its 25% faster?</p>



<a name="135115452"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135115452" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135115452">(Oct 03 2018 at 16:34)</a>:</h4>
<p>I'm a fan of ratios; <code>new/old</code>. Easy peezy. :)</p>



<a name="135121239"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135121239" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jake Goulding <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135121239">(Oct 03 2018 at 17:56)</a>:</h4>
<p>I often find myself stating "it is XX% &lt;units&gt; compared to the previous code" or similar in a commit message</p>



<a name="135121266"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135121266" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jake Goulding <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135121266">(Oct 03 2018 at 17:56)</a>:</h4>
<blockquote>
<p>By fooing the bar, the code now takes 45% of the previous time</p>
</blockquote>



<a name="135121663"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135121663" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> lqd <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135121663">(Oct 03 2018 at 18:01)</a>:</h4>
<p>ok let’s say that by treefrogging the leapjoins, the code now takes 70% of the previous <span class="emoji emoji-1f438" title="frog">:frog:</span> and making me uneasy at the same time :p</p>



<a name="135122339"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20October%202/near/135122339" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> lqd <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20October.202.html#135122339">(Oct 03 2018 at 18:11)</a>:</h4>
<p>(for peace of mind, I’ll try to make use of Matthew’s awesome work tomorrow and see what I broke)</p>



<hr><p>Last updated: Aug 07 2021 at 22:04 UTC</p>
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